Make it BIG!

Naturally, you'd like everyone in the audience to be able to actually see the visual you plan to use. This is complicated by not always knowing the size of the audience you'll speak to, or the size of the room you'll use.

As a rule of thumb, if it looks right on the computer screen, it's probably too small. If it looks big, it's still too small. Aim for outrageously large. Here are a few hints on estimating appropriate sizes during the design phase . . .

That, by the way is another good reason to plan ahead. If the visuals are done before you actually need them, you can try them out for size and re-do them if necessary.